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Balloon base is one of two important simple base in origami. Equally important base is Square base. The relationship between Balloon base and Square base is like one between valley-fold and mountain-fold.
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You can start with any kind paper with a square size. Here the back side of the paper is shown. |
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This is the front side of paper.
It is somewhat shinier compare to the back side. |
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The crease pattern (CP) for balloon base is shown on the left.
The order of folding is (1) two valley-folds followed by (2) two mountain-folds.
The following steps #1 through #8 explain these folding in detail.
The CP for balloon base is exactly opposite of the one for square base. If you switch between valley-fold and mountain-fold, then you can switch the base. |
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1. Let's start with a paper's front side facing up.
Prepare for a valley-fold along the mid horizontal line. |
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2. Apply the valley-fold of the step #1. |
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3. Prepare for a valley-fold along the mid vertical line. |
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4. Valley-fold of the step #4. |
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5. Prepare to mountain-fold along a diagonal line. |
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6. Apply the mountain-fold of the step #5. |
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7. Prepare to mountain-fold along another diagonal line. |
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8. Mountain-fold along the diagonal line.
Prepare to touch four corners with your fingers. |
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9. Touch each corner with your finger.
Prepare to move your fingers along the arrow directions. |
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10. Flatten the model. |
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11. Put the model down.
Balloon base is now completed. |